Virtual error compensation system of numerical control machine

Abstract

The invention relates to a virtual error compensation system of a numerical control machine in the technical field of numerical control machining, comprising an external data acquisition module, a digital modeling module, a data optimization module, a dynamic modeling module, a model generalization module, an error fitting module, an error compensation module and a communication module. In the invention, a multi-module nesting mode is adopted; the external information acquisition module is used for acquiring environment information, numerical control machine information, cutting amount, cutter parameters, and the like; an error model is generated by the acquired information through the dynamic modeling module and the model generalization module; the error fitting module outputs an error fitting curve; the error compensation module outputs NC (Numerical Control) codes; and the communication module realizes the real-time communication with a CNC (Computer Numerical Controller) and data acquisition through a COM (Component Object Model) serial port and an RS232 serial port. The system of the invention can be used for predicting comprehensive errors of the numerical control machine under various cutting conditions and realizing real-time error compensation.

Description

technical field [0001] The invention relates to a device in the technical field of numerical control machining, in particular to a virtual compensation system for numerical control machine tool errors. Background technique [0002] With the continuous development of numerical control technology, numerical control machine tools are widely used in various fields of mechanical processing. However, due to the original static geometric error of the CNC machine tool and the dynamic error factors such as the thermal error generated during the cutting process, the tool wear error and the error caused by the cutting force, these errors seriously affect the machining accuracy of the CNC machine tool, especially in precision and ultra-precision In processing, it is difficult to completely eliminate these errors by improving the precision of CNC machine tools alone, especially thermal errors generated during processing, errors caused by cutting forces, and tool wear errors. These errors...

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Problems solved by technology

[0004] The above technology is mainly an error compensation device developed for a certain error factor of CNC machine tools. These error compensation devices cannot realize comprehensive error compensation of CNC machine tools and cannot automatically adapt to changes in processing conditions. In order to realize comprehensive error compensation of CNC machine tools and automatically adapt to different cutting Error compensation under certain conditions requires the development of a special CNC machine tool error prediction and compensation system

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